#include <iostream>
using namespace std;

int main(){
    int num = 0;
    for (int i = 0; i < 100; i++)
    {
        /* code */
        if(i % 10 == 7 || i / 10 == 7 || i % 7 == 0){
            cout << "敲桌子: " << i << endl;
        }
    }
    
    return 0;
}